7.3/7.4 Test

Question 1

The movement of materials across the cell membrane without using cellular energy.

Answer 1

Passive Transport

Question 2

The process by which molecules of a substance move from areas of high to lower concentration.

Answer 2

Diffusion

Question 3

Molecules that cannot directly diffuse across the membrane pass through special protein channels (carrier molecules).

Answer 3

Facilitated DIffusion

Question 4

The diffusion of water through a selectively permeable membrane from an area of higher concentration to an area of lower concentration.

Answer 4

Osmosis

Question 5

Water channel proteins that allow water to flow through the membrane.

Answer 5

Aquaporin

Question 6

The concentration of solute molecules is the same inside and outside the cell.

Answer 6

Isotonic Solution

Question 7

The solution has a higher solute concentration than solute concentration inside the cell.

Answer 7

Hypertonic Solution

Question 8

The solution has a lower solute concentration than the cell.

Answer 8

Hypotonic Solution

Question 9

The movement of molecules against a concentration difference from an area of low concentration to an area of high concentration. REQUIRES ENERGY!

Answer 9

Active Transport

Question 10

A vesicle forms that large molecules, clumps of food or complete cells can be surrounded by and then forms a vacuole to pull the item into the cell. (Bulk Transport)

Answer 10

Endocytosis

Question 11

The forcing out of substances from the cell membrane using vacuoles and vesicles.

Answer 11

Exocytosis

Question 12

Large solids are taken into the cell.

Answer 12

Phagocytosis

Question 13

Large liquids are taken in the cell.

Answer 13

Pinocytosis

Question 14

An organism must maintain a relatively constant internal physical and chemical condition.

Answer 14

Homeostasis

Question 15

Group of similar cells that perform a similar function

Answer 15

Tissue

Question 16

Group of tissues that work together.

Answer 16

Organ

Question 17

Group of organs that work to complete the system.

Answer 17

Organ System

Question 18

To respond a cell must have a ____ that the signal binds to.

Answer 18

Receptor

Question 19

What happens to a cell when it is placed into an isotonic solution?

Answer 19

Water molecules will move in and out of the cell at the same rate

Question 20

When a cell is placed in a hypotonic solution water will _____ and the cell will _____.

Answer 20

move into the cell faster than out of the cell
lyse/burst/explode because of the increase of osmotic pressure

Question 21

When a cell is placed in a hypertonic solution water will _____and the cell will _____.

Answer 21

move out of the cell faster than they will move into the cell
shrink/shrivel due to a loss in osmotic pressure

Question 22

What has to be true in order for diffusion to occur?

Answer 22

Equilibrium must be reached and the membrane must be permeable (There has to be a difference in concentration?)

Question 23

What term do you use to describe no change in solution concentration level in the cell or solution?

Answer 23

equilibrium

Question 24

List the levels of organization from largest to smallest

Answer 24

organism
organ system
organ
tissue
cell

Question 25

List the levels of organization from smallest to largest.

Answer 25

cell
tissue
organ
organ system
organism